\begin{table}%t2
%\centering
\par
\caption{\label{tab2}Fitting parameters for the correlations between
$P_{1.4}$--$L_{0.1{-}2.4}$ and $P_{1.4}$--$L_{\rm bol}$ of giant
radio halos (see text).}
\par
\begin{tabular}{cccccccc}
\hline
\hline
   & & $A$ & $\sigma_A$ & $b$ & $\sigma_b$ & $\sigma_{{\rm Log}(P_{1.4})}$ &
   $\sigma_{{\rm Log}(L_{\rm X})}$ \\
\hline
$P_{1.4}$--$L_{0.1-2.4}$ & BCES Bisector & 0.195 & 0.060 & {\bf 2.06} &
   {\bf 0.20} & 0.28 & 0.14 \\
   & bootstrap     & 0.192 & 0.063 & 2.08 & 0.22 &  &      \\
$P_{1.4}$--$L_{0.1-2.4}$ & BCES Orthogonal & 0.204 & 0.062 & 2.21 & 0.23
   &      &      \\
   & bootstrap        & 0.202 & 0.067 & 2.23 & 0.27
   &      &      \\
$P_{1.4}$--$L_{\rm bol}$    & BCES Bisector & 0.077 & 0.057 & {\bf 1.76} & 
{\bf0.16} & 0.26 & 0.15 \\
   & bootstrap     & 0.075 & 0.059 & 1.78 & 0.18 & &      \\
$P_{1.4}$--$L_{\rm bol}$ & BCES Orthogonal & 0.077 & 0.059 & 1.86 &
	        0.19 &      &      \\
   & bootstrap       & 0.075 & 0.062 & 1.88 & 0.22 &      &      \\
\hline
\end{tabular}
\end{table}